Add the redirect route.

CHANGELOG.org

@@ -11,4 +11,6 @@
     Added a generator of a SafeString.
 ** 0.2.1 <2023-07-07 Fri>
     Added a method to create an Link using a generator.
+** 0.3.0 <2023-07-08 Sat>
+    Added the redirect route.
 

lib/link_shortener_web/controllers/redirect_controller.ex

@@ -0,0 +1,9 @@
+defmodule LinkShortenerWeb.RedirectController do
+  use LinkShortenerWeb, :controller
+  alias LinkShortener.Links
+
+  def show(conn, %{"shorten" => shorten}) do
+    %{url: url} = Links.get_one_by_shorten(shorten)
+    redirect(conn, external: url)
+  end
+end

lib/link_shortener_web/router.ex

@@ -18,6 +18,7 @@ defmodule LinkShortenerWeb.Router do
     pipe_through :browser
 
     get "/", PageController, :index
+    get "/u/:shorten", RedirectController, :show
   end
 
   # Other scopes may use custom stacks.

mix.exs

@@ -4,7 +4,7 @@ defmodule LinkShortener.MixProject do
   def project do
     [
       app: :link_shortener,
-      version: "0.2.1",
+      version: "0.3.0",
       elixir: "~> 1.12",
       elixirc_paths: elixirc_paths(Mix.env()),
       compilers: [] ++ Mix.compilers(),